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(No Model.) 7 3 Sheets-Sheet 1. L. S. ORANDALL.

TYPE WRITING MACHINE. No. 538,641. Patented Apr. 30, 1895.

1 "I II I IHI WITNESS ES: INVENTOR w 74'. M Luixen UccmAoK.

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(No Model.) 3 SheetsSheet 2. L. s. GRANDALL. TYPE WRITING MACHINE.

No. 538,641. I Patented Apr. 30, 1895.

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WITNESS ES: INVE'NTOR ATTORNEYS.

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L. s. GRA D-ALL; TYPE WRITING MACHINE.

No. 538,641.- I Patented Apr. 30, 1895.

WITNESS ES: INVENTOR Fw [I I Luelum Qmmkolk ATTORNEYS.

NITED STATES] PATENT OFFICE.

ASSIGNMENTS, TO WILLIAM A. SWEET, OF SAME PLACE.

TYPE-WRITING MACHlNE.

SPECIFICATION forming part of Letters Patent No. 538,641, dated April30, 1 895.

Application filed December 11, 1893. Serial No. 493,394. (No model.)

To all whom it may concern:

Be it known that I, LUOIEN S. CRANDALL, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Type-Writing Machines, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

My invention relates to type-writing machines and particularly to themechanisms therein, for adjusting the spring-wheel to vary the length ofthe line of printing, for stopping the carriage at the end of the line,for printing upon. said line beyond the stop, for the word or letterspacing escapement, for connecting the spring case to the escapementrack by a clutch so that both rotate together in one direction, and thespring case only will rotate in the opposite direction, said rack beingthen stationary, and for shifting. the paper-feed rollers toward or awayfrom the platen, according to the number of sheets of paper to beinserted; and for a novel bellringing mechanism.

My object is to improve the construction, operation and utility oftype-writing machines by the embodiment of part or all of the abovebroadly defined mechanisms in the machine, and to that end ,my inventionconsists in the several novel mechanisms and features of constructionand operation hereinafter described and which are specifically set forthin the claims hereunto annexed.

It is constructed as follows, reference being had to the accompanyingdrawings, in which- Figure 1 is a top plan of the machine, omitting thekey-board. Fig. 2 is a rear elevation thereof. Fig. 3 is a sideelevation thereof. Fig. 4 is a sectional elevation thereof on a linediametrical to the spring-wheel. Fig. 5 shows a side and an endelevation of the rod eccentric to the sleeve thereon which carries thepaper-feed roll. Fig. 6 is a topplan of the lower or escapementrack-section of the spring-Wheel, showing also the clutch mechanism bywhich it isintermittently connected to the upper section. Fig. 7 is adetail of part of the same, showing the sections connected, the dottedlines indicating them disengaged. Fig. 8 is a sectional ele- Y vation ofthe escapement mechanism, the

spring-wheel, the printing-line stop, and the devices for permittingprinting beyond the end of the line. Fig. 9 is a top plan of thespring-wheel, showing part of the bell broken away to expose thebell-ringing hammer and striking mechanism. Fig. 10 shows a top plan andside elevation of the ham mer-mountthe striking mechanism, and anelevation of the locking and adjusting bolt.

A is the top-plateof a type-writing ma fchine.

13 is the impression platen mounted in a carriage consisting of a frontrail a-, a rear rail a-- and sides Ct" said rearrail constituting alsothe rack-bar by which [the carriage is intermittentlyoperated, saidsides being also provided with caps in which the ends of the platen arejournaled, said rear rack-bar being tubular and fitting upon the reartrack -b and adapted to traverse it, and the front of the carriage beingalso more specifically described here, because they form part of thesubject matter of another application filed December 11, 1893, SerialNo. 493,395, wherein they are respectively fully described and claimed.

The shaft -l having its ends cut away to form bearings 2 eccentric tothe body thereof, is journaled in the sides of the carriage. A sleeve 3is loosely mounted upon said shaft, and -4tis the rubber tube mountedupon said sleeve, said sleeve and rubber tube constituting the paperfeed-roll and a thumb-nut -4' is mounted upon one of said bearingsexterior to the side of the carriage by which said shaft can be rotatedand set at any desired point by tightening said nut, inorder to vary thespace between the otherwise rigid and unyielding feed-roll, and theplaten, according to the number of sheets of paper to be inserted.

The spring wheel --D-- comprises a case -5, within which the spring 6 ismounted, as usual, and a bottom 7- both being journaled upon the arbor-8- secured in the top plate; said bottom or lower section being alsomounted upon balls S- mounted in races cut in the top-plate, or in thesuperimposed plate '9 and in the lower face of said lower section. A Tgroove cZ- is cut in the top of the case concentrically, and in it, a Tbolt e is inserted, a block 10 mounted thereon having a side arm 11 andan inclined lip -12, or upturned flange, and a bottom rib 13 upon saidblock fitting in said groove, all being adjustably secured at. anydesired point in the groove; 21. ring -14: being secured upon saidarbor, having a bent arm 15-, a spring l6- secured to such spring, allso that the rotation of the spring wheel to move the carriage for wordor letter spacing will when near the end of a line of print cause thehammer to ride said incline, compressing said spring, and then snap fromit to strike a blow upon the bell -m-, said incline being a cam in itseffect.

A disk 18 is secured upon the'lower section of the case, provided withcam notches 19-. Springs-20- are mounted in slits --2l substantiallyradial to this disk, and 22are metallic balls or cylinders normally heldin contact with the inner wall of the spring case, and the cam adjacentthereto, and all constituting a clutch by which the lower sectionintermittently rotates the spring case, to drive the carriage inprinting a line.

The lower sideof the lower section is flanged and teeth are-cut therein,thereby creating a circular escapement rack-bar -23-- with which theescapement dogs -2iand 25 alternately engage, to permit the spring wheelto rotate this rack-bar, and also to stop it; and also to permit thespring case to be rotated to Wind up the spring by the reversal of thecarriage.

Arms 26 project downward from the top-plate and in them a rock shaft -27is journaled to which the crank arms 2S are secured, and 29- are therods connecting them to thc escapement bar (not shown) which is operatedby the type levers, or space key in the usual manner. Upon this shaftthe escapement dog --24 is secured, and -25- is the other dog carried bya shoulder -32- upon the dog 24. These dogs are also connected by thebolt -33 and the springs -3-ithereon, and 35 is a return springconnected at one end to the arm 36 integral with or secured to one ofthe arms 26 and at the other to the arm 37 integral with the arm 26. Theoperation, or vibration of these dogs is shown by the dotted lines. Uponsaid bolt 33 the lock bar 38 is secured, its vibration simultaneous withthat of said dogs being shown by the dotted lines, its hooked end beingadapted to strike against the block -10- at the end of the line, in suchmanner as to abort the action of the escapement mechanism and preventthe further operation of the type levers, or space key. The springs onsaid bolt 33 are also adjusted to permit it to be rocked, and to returnit to its normal position. It is rocked at the end of a line of print bypushing the lock-bar laterally out of its stop engagement which willrelease the escapement to permit the printing of a few additionalletters at the end of a line of print, as to finish a word.

That I claim as my invention, and desire to secure by Letters Patent,is-

1. In a type-writer, a spring wheel consisting of an upper spring-casesection, and a lower escapement-rack section, and a clutchintermittently connecting said sections.

2. In a type-Writer, a spring wheel consisting of an upper springcasesection, and a lower escapement-rack section, a clutch intermittentlyconnecting said sections, escapement dogs engaging with said rack andmeans to operate said dogs.

3. In a typewriter, the combination with a carriage and an impressionplaten mounted thereon, and a rack-bar upon the carriage,of a springwheel engaging with said rack-bar, a circular escapement rack, a clutchintermittently connecting them, eseapement dogs engaging with said rackand means to operate them.

4. In a type-writer, a rotatable spring case journaled upon an arbor, abell upon said arbor, a spring connected to said arbor, a hammer uponsaid spring, and a cam mounted upon said spring case with which said hammer intermittently engages.

5. In a type-writer a rotatable spring case journaled upon an arbor, abell upon said arbor, a spring connected to said arbor, a hammer uponsaid spring and a cam adjustably mounted upon said spring case withwhich said hammer intermittently engages.

6. In a type-writer a rotatable spring case, a circular rotatableescapement rack intermittentiy connected thereto, escapement dogsengaging with said rack, and means to operate them, in combination witha block upon said spring case and a hooked arm connected to one of saidpawls and adapted to engage with said block.

7. In a typewriter a rotatable spring case, a block adjustably mountedthereon and a vertical lock-bar arching over the edge of the caseadapted to engage with said block, to lock said spring case, incombination.

8. In a type-writer a rotatable spring case, a block adjustably mountedthereon, and a lock-bar adapted to be vibrated to engage with saidblock, and to be swung laterally out of engagement therewith.

In witness whereof I have hereunto set my hand this 30th day ofNovember, 1893.

LUCIEN S. GRANDALL.

In presence of- M. M. Boner, HOWARD P. DENISON.

